Kredentials 2.0 represents the port of Kredentials to the KDE 4.x
environment.  0.9.x will continue to receive support for KDE 3.x, if
there's sufficient demand, but it won't generally get a lot of
attention.

Currently Kredentials 2.0 is not something I'm ready to declare
"released" without a bit more testing.  So please download it and submit
feedback.